2016 WNV Activity by County
Year To Date (Weeks 1 - 39)

(2018-10-23) - Source: http://www.westnile.ca.gov

Total Positive Counties: 37

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals276012913370301
Alameda--112-
Alpine-----
Amador-----
Butte19-214838
Calaveras-----
Colusa2---9
Contra Costa1-2795
Del Norte-----
El Dorado1-4--
Fresno9-6180-
Glenn5-41110
Humboldt-----
Imperial-----
Inyo-----
Kern9--80-
Kings2-4118-
Lake1-4394
Lassen-----
Los Angeles92-11138899
Madera4-599-
Marin--5--
Mariposa-----
Mendocino-----
Merced--51233
Modoc-----
Mono-----
Monterey1----
Napa--14-
Nevada--2-1
Orange18-79382-
Placer5-281037
Plumas-----
Riverside3-1431-
Sacramento18-409454-
San Benito-----
San Bernardino6-57920
San Diego11-256759
San Francisco-----
San Joaquin6-36348-
San Luis Obispo-----
San Mateo--115-
Santa Barbara-----
Santa Clara1-8513-
Santa Cruz--23-
Shasta1-3123
Sierra-----
Siskiyou-----
Solano--13167
Sonoma--82-
Stanislaus17-12256-
Sutter9-106832
Tehama5---8
Trinity-----
Tulare7-3257-
Tuolumne-----
Ventura2-32--
Yolo12-712583
Yuba9-41813
State Totals276012913370301